On August 16, 2005, a Bell 47 (registration N8494E) operated by Craft Flying Service Inc. was involved in an aviation accident near Monette, AR. Investigators recorded the probable cause as: The loss of control as result of a loss of hydraulic pressure for undetermined reasons. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A commercial pilot with 22,000 hours experienced a hydraulic failure indication while hovering two feet above ground. Control became difficult, leading to an emergency landing. The hard landing caused skid failure, rotor strikes, and a post-impact fire.
Accident
A commercial pilot with approximately 22,000 hours of flight experience was performing a two-foot hover when an indication of a hydraulic failure appeared. Subsequently, control of the helicopter became increasingly difficult, prompting the pilot to execute an emergency landing. During the landing, the helicopter impacted the ground hard, resulting in the failure of a landing gear skid. The hard landing also caused the main rotor blades to strike the ground or aircraft structure, and a post-impact fire ensued.
Investigation
Investigators were unable to determine the reason for the reported hydraulic failure due to the extensive fire damage that occurred after the accident. The post-impact fire consumed or damaged critical components, preventing a definitive analysis of the hydraulic system malfunction. No other contributing factors were identified in the source material.